Chapter 10: Time, Date, and Localization Functions

tanh

#include <cmath>float tanh(float arg);double tanh(double arg); long double tanh(long double arg);

The tanh( ) function returns the hyperbolic tangent of arg.

Related functions are acos( ), asin( ), atan( ), atan2( ), cos( ), sin( ), cosh( ), sinh( ), and tan( ).